Rule History

SID: 2066347 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 1 • Dec 16, 2025, 12:00 PM

Message:

ET INFO Observed Infrastructure as a Service Domain (railway .app in TLS SNI)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Observed Infrastructure as a Service Domain (railway .app in TLS SNI)"; flow:established,to_server; tls.sni; dotprefix; content:".railway.app"; endswith; fast_pattern; reference:url,railway.com/about; classtype:misc-activity; sid:2066347; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_12_16, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_16;)

Created:

Dec 16, 2025, 12:00 PM

Updated:

Dec 16, 2025, 12:00 PM

DB Created:

Dec 16, 2025, 10:34 PM

DB Updated:

Dec 17, 2025, 11:34 PM

Filename:

rules/emerging-info.rules